[time-nuts] State of the art of crystal oscillator measurements

KA2WEU at aol.com KA2WEU at aol.com
Thu Aug 11 17:37:04 EDT 2016


NO, the maximum  possible noise dynamic range is ( 177 +  Pout)  [dBm]  - 
Transistor large signal NF ( dB),
 the signal to noise ration is dimensionless !!!!
 
 
In a message dated 8/11/2016 5:00:43 P.M. Eastern Daylight Time,  
john at miles.io writes:

Or  rather -(177+DUT output power in dBm).  The minus sign makes the  
difference between the thermal floor and a nuclear war!

-- john,  KE5FX
Miles Design LLC

> Remember that L(f) is expressed in  dBc/Hz, not dBm/Hz.  If it were 
dBm/Hz,
> then kT would be the  limit.  But in dBc/Hz terms, the limit is 177 + the 
DUT's
> output  power in  dBm.


_______________________________________________
time-nuts  mailing list -- time-nuts at febo.com
To unsubscribe, go to  
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the  instructions there.



More information about the time-nuts mailing list